Compressor or pump connection



Aug. 24 1926. 1,597,182

J. G. DE REMER COMPRESSOR OR PUMP CONNECTION Filed August 26 192 INVENTOR I I I Patented Aug. 24', 1926.

UNIT-ED STATES PA'T'ENT OFFICE.

JAY G. DE REMER, GREENWICH, CONNECTICUT, ASSIGNOR T SAVAGE-DE BEMEB CORPORATION, OF NEW YORK, N. Y. A CORPORATION OF NEW YORK.

COMPRESSOR OR PUMP CONNECTION.

Application filed August 26, 1924. Serial No. 734,168.

The invention relates to the fluid conducing connections between gyratory pumps and the stationary apparatus from or to which the fluid is moved and is particularly 8 useful in small sized refrigerating systems, or household refrigerator cabinets, although it is useful also in other relations. The object is to eliminate the need of glands or stufling boxes in such connections and thereby provide a permanently sealed fluid passage or refrigerating circuit which is not likely to develop leaks, and also to provide a compact organization of the compressor and other parts in refrigerating cabinets,

and the invention also has other objects appearing below.

The accompanying drawings illustrate diagrammaticall a household refrigerator cabinet in which the invention is incorporated; Fig. 1 being a vertical section of a portion of such refrigerator and Fig. 2 a plan of the glandless connections referred to.

In Fig. 1, the space marked 1 represents the refrigerating or food compartment and the space, 2, the compressor or pump compartment. ment is located directly below the refrigerating compartment, as indicated, but it can be located at one side or elsewhere, as desired. When located in the same cabinet, and especially below the food compartment, compactness of the organization of the pump and its connections is an important consideration in order that the food compartment be 86 not too high for convenient access. The food compartment is built with walls of appropriate heat-insulating qualities while the pump compartment is constructed largely of open framing, closed in by grillework or w1re-mesh,.as indicated at 3, to provide for access and circulation of air for cooling purposes. The pump or compressor, mar ed 4, may be assumed to be constructed on the principle explained in my patent Reissue No. 15,590, May 1, 1923, but so far as this invention is concerned, any other compressor, of bodily revolving or oscillating type, might be used in its stead, and for the purposes of this specification and the claims all compressors or pumps, similar to the pump 4 or capable of use with the glandless connections of this invention are to be understood as comprehended Ordinarily the latter compartby the term gyratory. In the present case the pump is removably journalled, on an oblique axis, in bearings 5 fixed on a friction wheel 6 which latter is journalled in bearings 7 to rotate on a vertical axis and is driven by a friction pinion 8 on the armature of an electric motor 9. The rotation of the wheel and bracket carries the pump about the vertical axis and thereby causes it to perform its pumping function as described in the patent referred to. The mass of the compressor is balanced by a counterweight 10, also fixed on the wheel 6. It will be understood that the form of compressor mounting just described, although preferred, is subject to variation according to preference. of design, and that it is on y necessary that the pump be carried at an appropriate speed about the axis of the wheel. The motor 8 is supported at one end on a hinge 11 and at its other end by its friction pinion resting on the friction surface of the pump wheel and by this means an appropriate friction pressure is obtained while the motor can be swung back to disengage it,

from the wheel whenever desired, or entirely removed if necessary by withdrawing the hinge pin, which is a simple 0 eration. The motor base and the pump w eel shaft are shown as directly secured to the floor of the compartment, but one or both can of course be supported on springs or felt pads, as usual for absorbing the vibration and deadenin the noise.

The e ect of the revolution of the pump is to cause a circulatory movement of the mass of mercury contained in it,by the centrifugal effect, and thereby compress expanded refrigerant received from the evaporator 12 and deliver it compressed t9 the condenser 13, whence the liquid passes, under control of the expansion valve 14 back to the evaporator and pump according to the usual refrigerating cycle. The evapora tor, condenser and expansion valve are all conventionally indicated and may be of any appropriate design. The evaporator is located in the upper compartment of the cabinet and the condsener 1n the lower or pump compartment where it is subject to the cooling effect of the air current roduced by the revolution of the pump. The condenser might be carried on the pump. By the selection of an appropriate refrigerant, aircooling of the condenser is suflicient but it ma be Water-cooled if desired.

T he means of Communication between the pump which is rotatory or gyratory and the other apparatus which is stationary, is constituted of a pair of flexible, metallic conduits, connected between them, one conduit for the high pressure side and one for the low pressure side, and both so disposed that the flexure necessary to accommodate the pump movement is more or les uniformly distributed along their lengths and so that no portion of either conduit experiences a greater degree of distortion thanit can safely accommodate for an indefinite period without crystallization.

The high-pressure conduit is marked 15 and the low-pressure or return conduit 16, and, in the preferred form, they are both continuously curved or coiled in the same plane, and in parallel relation so as to form a flat double spiral, which is transverse to and concentric with, the gyratory axis. The outer peripheral ends of these spiral tubes are held in fixed clamps 17 and 18 and welded or otherwise coupled, at 19 and 20, to the respective terminals of the evaporator and condenser, while their inner ends, which preferably pass through and are supported by diametrically opposed clamps 21, 22, are

similarly connected to the high pressure and low pressure terminals 23 and 24 of the compressor. I have found that drawn steel tubing forms satisfactory flexible conduits for this purpose. By the spiral shape of the tubes-the flexure therein due to the motion of the obliquely held pump about its main axis is well distributed, both as torsional and lateral deflection of the conduit and no section of the tube is liable to fracture as the result of metal fatigue. It will. be a parent, however, that while the flat spiral form is preferred, the flexure can be similarly or sufiiciently distributed throughout a long length of tube by using other configurations and with approximation to the same degree of compactness as provided by the flat spiral. By locating the exing portions of both tubes in the same plane, the device is made specially compact and particularly suited for assembly in a cabinet, parallel with and adjacent to the partition wall between compartments, but it will be obvious that the two tubes can be placed in adjacent planes if desired, or otherwise, and further, that in some uses of the invention only one tube or conduit may be necessary. It will in any event, be arranged, preferably in a plane transverse to the ato axis, so that the distortion produce by t e motion of the pump will be sufliciently distributed throughout its length to ayoid to the metal by repeated opera 10!].

'Claims:

1. The combination with a gyratory pump and stationary apparatus served thereby, of means of communication between them comprising a flexible conduit having one end connected to the fixed apparatus and its other end to the pump and adapted to be flexed throughout substantially its entirelength by the movement of the'pump.

2. The combination with a gyratory pump and stationary apparatus, of a flexible metallic conduit disposed in a plane or planes transverse to the gyratory axis and having one end connected to said stationary apparatus and the other end connected to and moved by the pump.

3. The combination with a gyratory pump and stationary apparatus, of a continuously curved flexible metallic conduit connecting said pump and apparatus and adapted to accommodate the pump movement.

4. The combination with a gyratory pump and stationary apparatus, of a continuously curved, metallic conduit disposed transverse to the gyratory axis of the pump and connected by its' opposite ends, respectively to said pump and apparatus.

5. The combination with a gyratory pump and stationary apparatus, of a flexible metallic conduit curved in spiral form and connected by its inner end to the pump and by its peripheral end to said apparatus.

6. The combination with a gyratory pump, of high and low pressure connections therefrom to stationary ap aratus, said connections comprising para lel, flexible metallic conduits connected at one end to said apparatus and at the other to the pump and adapted to be flexed thereby throu hout substantially the whole of their lengt s.

7 The combination with a gyratory pump, of high and low pressure connections there.- from to stationary apparatus, said connections comprising parallel conduits disposed in the same plane and transversely to the gyratory axis and connected respectively by their opposite ends to said pump and apparatus.

r 8. The combination with two compart ments of a cabinet, of a gyratory pump in one compartment and stationary apparatus in the ot er, of means of communication between the pump and apparatus comprising a flexible metallic conduit located in the pump compartment and having one of its ends connected to said stationary apparatus and the other end connected to, and moved by, the

9. e combination with two compartments ofsa gyratory ump in one, and stationa apparatus in t e other, and metallic conduits connecting the pump and apparatus, said conduits having flexing portions disposed in the pump compartment and in a plane parallel to one of the walls thereof.

10. The combination of a compartment, an upright bearing therein, a horizontal friction wheel revolving on said bearing, a pump operated by said wheel, connections extending from said pump to stationary apparatus outside said compartment, and a driving m0- tor in said compartment provided with apinion resting by the weight of the motor on said friction Wheel.

11. The combination of two compartments, one containing rotary pump mechanism and the other containing stationary apparatus served thereby, delivery and return connections between said pump mechanism and said apparatus, the revolving parts of said mechanism being mounted to move in horizontal planes, and a driving motor in said compartment having, friction-driving connection with said mechanism.

12. The combination in a cabinet, of upper and lower compartments, stationary apparatus in the upper compartment, a pump in the lower compartment, delivery and return flexible connections between said. apparatus and pump located in the upper part of the lower compartment and above the pump, a horizontal driving wheel for said pump and a horizontally disposed motor in said pump compartment for driving said wheel.

In testimony whereof, I have signed this specification.

JAY G. DE REMER. 

